| abstract |
An optical film capable of uniform polarization conversion in a wide wavelength range is provided. An optical film obtained by polymerizing a compound containing a group represented by the formula (A) and a polymerizable group, and having a thickness of 0.1 to 10 μm. -G a -D a -Ar a -D b -G b- (A) [In the formula (A), Ar a represents a divalent group having at least one aromatic ring selected from the group consisting of an aromatic hydrocarbon ring and an aromatic heterocyclic ring, and is included in the aromatic ring in the Ar a group The number N πa of π electrons is 12 or more and 22 or less. G a and G b each independently represent a divalent alicyclic hydrocarbon group. The hydrogen atom contained in the alicyclic hydrocarbon group is a halogen atom, an alkyl group having 1 to 4 carbon atoms, a fluoroalkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a cyano group, or a nitro group. The methylene group contained in the alicyclic hydrocarbon group may be substituted with —O—, —S—, or —NH—. ] [Selection] Figure 1 |